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| 型号： | MCP23S17T-E/ML |
| 厂商： | Microchip Technology |
| 文件页数： | 45/48页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER SPI 16B 28QFN |
| 标准包装： | 1,600 |
| 接口： | SPI |
| 输入/输出数： | 16 |
| 中断输出： | 是 |
| 频率 - 时钟： | 10MHz |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN（6x6） |
| 包装： | 带卷 (TR) |
| 配用： | MCP23X17EV-ND - BOARD EVAL FOR MCP23X17 GPIODM-KPLCD-ND - BOARD DEMO LCD GPIO EXP KEYPAD |
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MCP23017/MCP23S17
DS21952B-page 6
2007 Microchip Technology Inc.
1.3.2.2
I2C Read Operation
I2C Read operations include the control byte sequence,
as shown in the bottom of Figure 1-1. This sequence is
followed by another control byte (including the Start
condition and ACK) with the R/W bit set (R/W = 1). The
MCP23017 then transmits the data contained in the
addressed register. The sequence is ended with the
master generating a Stop or Restart condition.
1.3.2.3
I2C Sequential Write/Read
For sequential operations (Write or Read), instead of
transmitting a Stop or Restart condition after the data
transfer, the master clocks the next byte pointed to by
the address pointer (see Section 1.3.1 “Byte Mode
and Sequential Mode” for details regarding sequential
operation control).
The sequence ends with the master sending a Stop or
Restart condition.
The MCP23017 Address Pointer will roll over to
address zero after reaching the last register address.
Refer to Figure 1-1.
1.3.3
SPI INTERFACE
1.3.3.1
SPI Write Operation
The SPI write operation is started by lowering CS. The
Write command (slave address with R/W bit cleared) is
then clocked into the device. The opcode is followed by
an address and at least one data byte.
1.3.3.2
SPI Read Operation
The SPI read operation is started by lowering CS. The
SPI read command (slave address with R/W bit set) is
then clocked into the device. The opcode is followed by
an address, with at least one data byte being clocked
out of the device.
1.3.3.3
SPI Sequential Write/Read
For sequential operations, instead of deselecting the
device by raising CS, the master clocks the next byte
pointed to by the Address Pointer. (see Section 1.3.1
“Byte Mode and Sequential Mode” for details
regarding sequential operation control).
The sequence ends by the raising of CS.
The MCP23S17 Address Pointer will roll over to
address zero after reaching the last register address.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP23S18 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16-Bit I/O Expander with Open-Drain Outputs |
| MCP23S18-E/MJ | 功能描述:接口-I/O扩展器 16B I/O Expander SPI interface RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MCP23S18-E/MJ | 制造商:Microchip Technology Inc 功能描述:; Bus Frequency:10MHz; IC Interface Type |
| MCP23S18-E/SO | 功能描述:接口-I/O扩展器 16B I/O Expander SPI interface RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| MCP23S18-E/SP | 功能描述:接口-I/O扩展器 16B I/O Expander SPI interface RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
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